[Table/Fig-5]:

Showing the socioeconomic class of cases and controls [9].

Socio economic status	Cases			Controls
	Scl AV		Total	Scl AV		Total
	Absent	Present		Absent	Present
Lower Middle	34	8	42	33	3	36
Upper Class	3	1	4	2	0	2
Upper Middle	12	2	14	18	4	22
Total	49	11	60	53	7	60
Chi-Square	0.286			1.558
df	2			2
p-value	0.87			0.459